my son is 12 years old at night he is having some mucus sounds in thoart and clenching teeth reason

A. Maybe your child is genuinely having cough and congestion which is why this is happening you can check with your doctor what medicine would be good and is it required to do nebulising because if there is congestion in the chest nebulising will help in clenching and cluttering of teeth sometimes can be associated with worms in the tummy